Gas-pressure equalizer



(No Model.)

` K. J. SMITH.

GAS PRESSURE EQUALIZER. No. 456,238. Patented July 21,1891.

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GAS-PRESSURE EQUALIZER.

SPECIFICATION forming par-t of Letters Patent No. 456,238, dated July21, 1891.

Application filed November l0, 1890. Serial No. 370,961. (No model.)

To all whom t may concer/z.-

Be it known that I, KILIAN J. SMITH, of Rutherford, Bergen county, andState of New Jersey, have invented a new and useful Improvement in GasPressure Equalizers, of which the following is a specification.

Myinv'ention relates to an improvement in gas-pressure equalizers-forexample, of the kind shown in Patent lo/420,169; and it consists incombining the dome of such a structure with a suspension-spring and adjListing-screw, and also with a scale, as hereinafter more fullyexplained. j l

The object of my invention is to balance the dome and to prevent it fromacting as a gasexpeller, leaving it to act simply as apressure-regulator.

Reference is had to the accompanying drawings, wherein- Figure lis acentral Vertical section of my improved equalizer. Fig. 2 is a plan viewof the same. Fig. 3 is an enlarged vertical crosssection of mydome-regulating spring-scale.

Similar letters refer to similar parts.

A is the exterior chamber having the inner open-ended cylinder E G, thegas-inlet pipe; G', the gas-outlet pipe; F, the dome dipping in liquidcontained in the chamber A; L, the vertical dome-spindle; J, the diskthereon, and I the arm of the inlet-valve H. These parts, as far asdescribed, are well known and are substantially as specified in PatentNo. 420,169. I find that the device of said patent, however, serves moreas a gas-expeller than as a regulator, because of the dead- Weight ofthe dome F, and in fact more gas is consumed by the use of such astructure than would be if the structure were wholly omitted; but byadding to the dome'the adjustable sprin g and screw hereinafter referredto, I am enabled to balance it and to adjust its weight in conformitywith the varying degrees of gas-pressure, thereby reducing the.

quantity of gas consumed. To this end I connect the upper end of thespindleL above the chamber A by a link a or directly to a spring M, thisspring being suspended from a screw P, which in turn is suspended in aframe N, which is supported on the cover of the chamber A. The height ofthe spring M can be regulated by a thumb-nut O, which plays on the screwP and bears on the frame N.

In operation, when gas underan excess of pressure enters through thepipe G into the cylinder E, the dome F rises, raising at the same timethe disk J, upon which rests the valve-arm I. It will be seen that asthe dome rises the valve H gradually-closes, reducing thereby the supplyof gas to the chamber. When the supply of gas is Linder insufficientpressure, the dome falls, and as it falls the valve H openswider.Experience has proven that the weight of the dome F upon thetherein-.contained gas in most gas-pressure regulators has caused,rather than a regulation of gas, a very unnecessary waste, for, unlessthe weight of this dome is neutralized, it will cause an expulsion ofgas from the chamber inthe proportion to the amount of pressure causedby such weight, and will therefore upon its very face prevent thesuccessful working of such a so-called regulator. By introducing theadjustable spring M and its screw P in combination with theregulatingdome applicant balances and neutralizes the Weightot' the domeF, so that it will be a regulator and not a gas-expeller. In case thepressure back of the supply-pipe G should be increased or diminished theheight of the spring M maybe regulated by the thumb-nut O, therebyadjusting the height of the dome F to accommodate the pressure throughthe pipe G. I prefer to connect the upper'end of the spring M and thelower end of the screw P to an ordinary spring-scale having asuitably-graduated plate R, on which a pointer b, projecting from thelink a, indicates the play of the balanced dome. y

I do not wish to confine myself to the particular device J I forregulating the valve by the motion of the dome, as other Well-knowncontrivances for the same purpose may be used instead.

Havingthus described my invention, what I claim is The combination, in agas-pressurezregulator, of an exterior chamber A, containing thecylinder E, the 'gas-supplypipe G, extending into the cylinder E, thevalve H on pipe G, having a laterally-extending arm, the disk ICO J,placed under the said arm of the valve 1I, the dome F, supporting thevertical rod L, carrying said disks J and connected with the Cylinder Eand extending upward therefrom, the discharge-pipe G', leading from thecylinder E, the standard N, carried by the Chamber A, Screw P, ezured bysaid smudardmut O, carried by said screw, and spring M, conmeeting therod L with the scale R, the scale R, connecting the upper end of Jhesp1-ing M lo with the lower end of the screw P, substantially asdescribed.

KILIAN J. SMITH.

vWitnesses:

GUSTAV SCHNEPP, R. C. MITCHELL.

